HeatGear® is UA'S original performance baselayer. THEY worked with Celanese to create a new stretchy NEOLAST™ fiber that gives you a more consistent fit and comfort. HeatGear® fabric is made from 80% polyester/20% elastoester, ultra-soft & smooth for extreme comfort with very little weight New, innovative NEOLAST™ fibers provide powerful stretch, durability, comfort & improved wicking NEOLAST™ is a high-performing alternative to elastane designed to begin addressing sustainability challenges associated with elastane Material wicks sweat & dries really fast 4-way stretch material moves better in every direction Ergonomic design keeps seams off high abrasion areas & increases durability Odor control technology minimizes odor Many fabrics shed microplastics that get in water, air, your body—this fabric was engineered to shed less Style: 6015382-100 Color: White / Halo Grey / Reflective